/**
  * @cover ::isOperationValid
  */
 public function testInvalidOperation()
 {
     $operation = new Operation(200, new DateTime(), "000001", false);
     $this->operationManager->findByMiraklIdAndPaymentVoucherNumber(Argument::is(false), Argument::type("string"))->willReturn(null)->shouldBeCalled();
     $this->operationManager->isValid($this->operationArgument)->willReturn(false)->shouldBeCalled();
     $this->assertFalse($this->cashoutInitializer->isOperationValid($operation));
 }